Welding MCQ Questions and Answers Quiz

11. Which fuel gas is used for cutting deep under water?

  1. Acetylene
  2. Hydrogen
  3. LPG
  4. Methane

12. While gas cutting the nozzle should

  1. almost touch the work
  2. be 10 mm away from work
  3. be 2 mm away from work
  4. be 5 mm away from work

13. If the blowpipe is moved to and fro frequently while cutting the kerf will

  1. be more
  2. of correct size
  3. be less
  4. not be affected

14. The electrode size refers to

  1. diameter of its core wire
  2. diameter (overall) of electrode
  3. thickness of flux coating
  4. length of electrode

15. The position in which it is easiest to weld is

  1. Flat
  2. Vertical
  3. Horizontal
  4. Overhead

16. Which type of fire extinguisher is used in a welding shop?

  1. Foam type extinguisher
  2. Dry powder extinguisher
  3. CO2 extinguisher
  4. Halon extinguisher

17. If a worker has suffered from electric shock, he should be

  1. given an alcoholic drink
  2. given a cold drink
  3. made to walk
  4. kept warm and covered

18. The arc utilized in electric arc welding is a

  1. High voltage, high current discharge
  2. Low voltage, low current discharge
  3. Low voltage, high current discharge
  4. High voltage, low current discharge

19. The size of a welding machine is determined by

  1. Input amperage
  2. Output amperage
  3. Open circuit voltage
  4. Closed circuit voltage

20. If L (mm) is the length of the inner cone of the flame, the tip-to-metal distance should be

  1. L mm
  2. L + 2 mm
  3. L + 4 mm
  4. L + 6 mm

MCQ Multiple Choice Questions and Answers on Welding

Welding Trivia Questions and Answers PDF

Welding Question and Answer

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